version 1.1.1.2, 2000/09/09 14:12:24 |
version 1.1.1.3, 2003/08/25 16:06:20 |
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/* mpn_cmp -- Compare two low-level natural-number integers. |
/* mpn_cmp -- Compare two low-level natural-number integers. |
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Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc. |
Copyright 1991, 1993, 1994, 1996, 2000, 2001 Free Software Foundation, Inc. |
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This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
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Line 19 along with the GNU MP Library; see the file COPYING.LI |
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Line 19 along with the GNU MP Library; see the file COPYING.LI |
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
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#define __GMP_FORCE_mpn_cmp 1 |
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#include "gmp.h" |
#include "gmp.h" |
#include "gmp-impl.h" |
#include "gmp-impl.h" |
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/* Compare OP1_PTR/OP1_SIZE with OP2_PTR/OP2_SIZE. |
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There are no restrictions on the relative sizes of |
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the two arguments. |
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Return 1 if OP1 > OP2, 0 if they are equal, and -1 if OP1 < OP2. */ |
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int |
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#if __STDC__ |
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mpn_cmp (mp_srcptr op1_ptr, mp_srcptr op2_ptr, mp_size_t size) |
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#else |
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mpn_cmp (op1_ptr, op2_ptr, size) |
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mp_srcptr op1_ptr; |
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mp_srcptr op2_ptr; |
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mp_size_t size; |
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#endif |
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{ |
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mp_size_t i; |
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mp_limb_t op1_word, op2_word; |
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for (i = size - 1; i >= 0; i--) |
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{ |
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op1_word = op1_ptr[i]; |
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op2_word = op2_ptr[i]; |
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if (op1_word != op2_word) |
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goto diff; |
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} |
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return 0; |
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diff: |
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/* This can *not* be simplified to |
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op2_word - op2_word |
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since that expression might give signed overflow. */ |
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return (op1_word > op2_word) ? 1 : -1; |
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} |
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